Book cover



FIG. 1 is a perspective view of a book cover showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right end view thereof with respect to the view of FIG. 2; and,

FIG. 6 is a left end view thereof with respect to the view of FIG. 2. 

The ornamental design for a book cover, substantially as shown and described. 